18375740 has 12 divisors (see below), whose sum is σ = 38589096. Its totient is φ = 7350288.

The previous prime is 18375739. The next prime is 18375743. The reversal of 18375740 is 4757381.

It is a self number, because there is not a number n which added to its sum of digits gives 18375740.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18375743) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 459374 + ... + 459413.

It is an arithmetic number, because the mean of its divisors is an integer number (3215758).

Almost surely, 2^18375740 is an apocalyptic number.

18375740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18375740 is an abundant number, since it is smaller than the sum of its proper divisors (20213356).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18375740 is a wasteful number, since it uses less digits than its factorization.

18375740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 918796 (or 918794 counting only the distinct ones).

The product of its (nonzero) digits is 23520, while the sum is 35.

The square root of 18375740 is about 4286.6933643544. The cubic root of 18375740 is about 263.8851467039.

The spelling of 18375740 in words is "eighteen million, three hundred seventy-five thousand, seven hundred forty".